Say Goodbye to Your Old Water Heater Tank
Knoxville's #1 Trusted Tankless Water Heater Conversion Specialists — Endless Hot Water, Lower Bills, More Space
Licensed & Insured
Same-Day Quotes
Tank Water Heaters Fail — And When They Do, It's Expensive
$2,500+
AVERAGE DEDUCTIBLE
Avoid that large deductible on a water heater flood claim. 99% of insurance companies only pay part of your claim - you pay the rest! Don't lose sleep over it. Go tankless today!
55+ Gallons
RELEASED IN A BURST
Flooded floors, walls, drywall, basement, and personal belongings all at once. And the tank doesn't stop trying to refill while you're away or asleep! Avoid the nightmare - Go tankless today!
8-12 Years
AVG. TANK LIFESPAN
Tankless water heaters can last 25+ years on average when installed and maintained properly. If your tank is 8+ years old, you're on borrowed time - Go tankless today!
Why Knoxville Homeowners Are Making the Switch
From the established neighborhoods of Bearden, Sequoyah Hills, and Concord to growing communities like West Hills and Cedar Bluff, Knoxville-area homeowners are making the switch to tankless at a record pace. If your tank water heater is aging, inefficient, or simply taking up too much space, a tank-to-tankless conversion could be the smartest home upgrade you make this year. Tankless water heaters heat water on demand — no more waiting, no more running out, and no more wasted energy heating water that sits in a tank all day.
Did You Know?
We can install a tankless system that provides hot water at your tap practically instantly — without having to install a dedicated recirculation line — saving the average family 12,000 gallons of water annually! Plus, tankless systems use on average 30% less gas compared to a standard tank-type water heater.
40%
Energy Savings
vs. traditional tank heaters
2 two 3x
Longer Lifespan
Tankless units can last 25-30+ years when installed & maintained properly — vs. ~10 years for a tank.
∞
Unlimited Hot Water
Never run out mid-shower again
12K
Save 12,000 Gallons Annually
We can install a system that delivers hot water at your tap practically instantly, without a dedicated recirculation line, saving the average family ~12,000 gallons of water per year — plus up to 30% on gas consumption vs. a standard tank heater!
The Benefits of Going Tankless
On-Demand Hot Water
Water is heated instantly as it flows through the unit — no storage tank needed, no waiting.
Lower Energy Bills
Tankless heaters use 24–40% less energy than conventional tank models, saving you money every month.
Space-Saving Design
Wall-mounted and compact, tankless units free up floor space in your utility room, garage, or closet.
Eco-Friendly
Less energy consumption means a smaller carbon footprint. Better for your wallet and the planet.
Long-Lasting Durability
With proper maintenance, tankless water heaters last 20+ years — double the lifespan of traditional tanks.
Whole-Home Coverage
Sized correctly, one tankless unit can supply hot water to your entire home simultaneously.
Our Conversion Process — Simple, Fast, Professional
We handle everything from the initial free consultation to your final city inspection, and most conversions are completed in the same day.
One of our certified technicians visits your home to evaluate your current water heater, gas lines, venting, and hot water usage needs.
Free Home Assessment
We recommend the right tankless unit for your home's size, number of bathrooms, and usage patterns — no guesswork.
Custom System Recommendation
We pull all required permits and schedule your installation at a time that works for you — often within days.
Permit & Scheduling
Our licensed plumbers remove your old tank and install your new tankless system, including any necessary gas line or venting upgrades.
Professional Installation
We test every connection, verify performance, and walk you through operating and maintaining your new system before we leave.
Testing & Walkthrough
Let us handle it for you. Our annual maintenance visits keep your system under warranty, running efficiently, and free from costly breakdowns.
Sign Up for the Tankless Pro Care Plan!
Ready for Endless Hot Water? Call Us Today!
Same-day quotes available. Licensed & Insured. Serving Knoxville, Farragut, Maryville & surrounding areas.
Proudly Serving the Greater Knoxville Area
Our licensed technicians are local to East Tennessee and deeply familiar with every community we serve — from the prestigious neighborhoods of Bearden, Sequoyah Hills, and Northshore to sought-after communities like Concord and West Knoxville. Fast response times, same-day quotes, and service you can count on.
Knoxville
Farragut
Hardin Valley
Karns
Cedar Bluff
Oak Ridge
Clinton
Lenoir City
Bearden
Dandridge
Jefferson City
Sequoyah Hills
Northshore
Concord
West Hills
West Knoxville
Maryville
Alcoa
Tellico Village
Kingston
Rockwood
Not sure if we serve your area? Call us — we likely do.
Keeping Your Tankless System Running Perfectly
Unlike traditional tanks, tankless water heaters require minimal but important maintenance. With proper care, your system will deliver peak performance on average of 25-30+ years.
Annual Maintenance Checklist
- Flush and descale the heat exchanger (removes mineral buildup)
- Inspect and clean the inlet filter screen
- Check venting and combustion air supply
- Test pressure relief valve
- Inspect gas connections for leaks
- Check error codes and run diagnostic cycle
Recommended
Our Maintenance Plans
Tankless Pro Care Plan
Let us handle it for you. Our annual maintenance visits keep your system under warranty, running efficiently, and free from costly breakdowns.
- Annual descaling & flush
- Full system inspection
- Priority scheduling
- Discounted repair rates
- Reminder service
What Our Knoxville Customers Are Saying
★★★★★
"We converted from a 40-gallon tank to a Rinnai unit and couldn't be happier. Our gas bill dropped noticeably and we never run out of hot water with four kids."
Sarah M.
Bearden, Knoxville TN
★★★★★
"The team was professional, on time, and had everything done in one day. They even handled the permit. I highly recommend Tankless Heater Pros."
James T.
West Knoxville, TN
★★★★★
"I was skeptical at first but the savings are real. Best home investment I've made. These guys really know their stuff."
Linda K.
Sequoyah Hills, Knoxville TN
Frequently Asked Questions
How long does a tank-to-tankless conversion take?
Most conversions are completed in 4-8 hours. Complex installations involving gas line upgrades or new venting may take a full day, but we rarely need to return for a second visit.
Do I need a permit for a tankless water heater in Tennessee?
Yes. Tennessee requires a permit for water heater replacements. Tankless Heater Pros handles all permit applications on your behalf — it's included in every installation.
Will one tankless unit supply my whole house?
In most cases, yes. We carefully size the unit to your home's peak demand. Larger homes with high simultaneous usage may benefit from two units or a whole-home system.
Can tankless water heaters run on natural gas or propane?
Yes. We install both natural gas and liquid propane tankless units. We also install electric tankless units for homes without gas service.
What brands do you install?
We are certified installers for Rinnai, Navien, Noritz, Rheem, and others. We'll recommend the best brand and model for your home and budget.
Thank you for contacting us.
We’ll get back to you as soon as possible.
We got it.
Ready to Make the Switch? Let's Talk.
Get your free, no-obligation quote today. We'll assess your home, recommend the right system, and handle everything from permits to final inspection.
Call Us
hours
Monday through Friday: 8:00 AM to 6:00 PM
Saturday: 9:00 AM to 4:30 PM
Sunday: Closed
Service Area
Serving all of Greater Knoxville, TN
